使用pybind11在Python脚本中调用MAXON库的正确CMakeLists.txt文件 [英] The correct CMakeLists.txt file to call a MAXON libarary in a Python script using pybind11

问题描述

我对整个CMake都是新手.跟随此和此帖子，现在我想使用pybind11在Python中调用MAXON函数.到目前为止，我所做的事情:

I'm very new to the whole CMake. Following this and this posts, now I want to call a MAXON function inside Python, using pybind11. What I have done so far:

• 可以从本页( 直接下载链接).

• The library can be downloaded from this page (direct download link).

wget https://www.maxongroup.com/medias/sys_master/root/8837358518302/EPOS-Linux-Library-En.zip

• 解压缩:

unzip EPOS-Linux-Library-En.zip

• 使安装外壳脚本可执行并运行:

chmod +x ./install.sh
sudo ./install.sh

• 然后转到示例文件夹:

cd /opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd/

• 现在在此处中组合CMakeLists.txt个文件:
• Now combining the CMakeLists.txt files from here:

# CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12)
project (HelloEposCmd)

set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wall")

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

find_package(pybind11 REQUIRED)
pybind11_add_module(${PROJECT_NAME} HelloEposCmd.cpp)

add_executable(${PROJECT_NAME} HelloEposCmd.cpp)

target_link_libraries(${PROJECT_NAME} -lEposCmd)

• 和HelloEposCmd.cpp这行添加在其他头文件之后:
• and the HelloEposCmd.cpp this line is added right after other header files:

#include <pybind11/pybind11.h>

主要功能重命名为:

int run(int argc, char** argv)

和添加模块的pybind11语法写在最后:

and the pybind11 syntax to add the module is written at the end:

PYBIND11_MODULE(HelloEposCmd, m) {

    m.def("run", &run, "runs the HelloEposCmd");
}

但是，当我运行cmake .时，出现错误消息:

However, When I run the cmake . I get the error:

CMakeLists.txt:13(添加可执行文件)上的CMake错误:

CMake Error at CMakeLists.txt:13 (add_executable):

add_executable无法创建目标"HelloEposCmd"，因为已经存在另一个具有相同名称的目标.现有目标是在源目录"/opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd"中创建的模块库.有关更多详细信息，请参阅策略CMP0002的文档.

add_executable can not create target "HelloEposCmd" because another target with the same name already exists. The existing target is a module library created in source directory "/opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd" See documentation for policy CMP0002 for more details.

...

我想知道您是否可以帮助我获取正确的CMakeList.txt文件.理想情况下，我应该能够在python中调用已编译的模块:

I was wondering if you could be kind to help me get the right CMakeList.txt file. Ideally, I should be able to call the compiled module in python:

# HelloEposCmd.py

import HelloEposCmd

HelloEposCmd.run()

非常感谢您的支持.

推荐答案

pybind11_add_module已经为您创建了一个目标.因此，您不再需要add_executable.只需删除该行，然后在构建时会得到一个名称为HelloEposCmd

pybind11_add_module already creates a target for you. So you don't need add_executable anymore. Just remove that line and when you will build you will get a library with the name HelloEposCmd

add_executable，我认为这不是您想要的.

add_executable is needed if you are building an executable (.exe), which I believe is not what you want.

模仿说.

此函数的行为与CMake的内置add_library非常相似(实际上，它是该命令的包装函数).

This function behaves very much like CMake’s builtin add_library (in fact, it’s a wrapper function around that command).

这篇关于使用pybind11在Python脚本中调用MAXON库的正确CMakeLists.txt文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！